Friday, October 27, 2017

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(ICD)

Click Image To See What An ICD Can Do

ICDs
are useful in preventing sudden death in patients with known, sustained
ventricular tachycardia or fibrillation. Studies have shown ICDs to
have a role in preventing cardiac arrest in high-risk patients who
haven't had, but are at risk for, life-threatening ventricular
arrhythmias. View an animation of an ICD.Newer-generation
ICDs may have a dual function which includes the ability to serve as a
pacemaker. The pacemaker feature would stimulate the heart to beat if
the heart rate is detected to be too slow.What is an Implantable Cardioverter Defibrillator (ICD)?An
ICD is a battery-powered device placed under the skin that keeps track
of your heart rate. Thin wires connect the ICD to your heart. If an
abnormal heart rhythm is detected the device will deliver an electric
shock to restore a normal heartbeat if your heart is beating chaotically
and much too fast.ICDs have been very useful in preventing
sudden death in patients with known, sustained ventricular tachycardia
or fibrillation. Studies have shown that they may have a role in
preventing cardiac arrest in high-risk patients who haven't had, but are
at risk for, life-threatening ventricular arrhythmias.The
American Heart Association recommends that before a patient is
considered to be a candidate for an ICD, the arrhythmia in question must
be life threatening and doctors have ruled out correctable causes of
the arrhythmia, such as:

Because many people do not understand their underlying condition – such as heart failure or genetic predisposition for risk of sudden cardiac arrest
– and because ICDs are used primarily to prevent sudden cardiac death,
they in turn may not understand the benefits versus the limitations of
having an ICD implanted. If you are one of those people, you will find
information and guidance here.Why do I need an ICD?Your doctor may recommend an ICD if you or your child is at risk of a life-threatening ventricular arrhythmia because of having:

How is an ICD implanted?A
battery-powered pulse generator is implanted in a pouch under the skin
of the chest or abdomen, often just below the collarbone. The generator
is about the size of a pocket watch. Wires or leads run from the pulse
generator to positions on the surface of or inside the heart and can be
installed through blood vessels, eliminating the need for open-chest
surgery.How does an ICD work?It knows when the heartbeat is not normal and tries to return the heartbeat to normal.

If
your ICD has a pacemaker feature when your heartbeat is too slow, it
works as a pacemaker and sends tiny electric signals to your heart.

When your heartbeat is too fast or chaotic, it gives defibrillation shocks to stop the abnormal rhythm.

It works 24 hours a day.

New devices also provide “overdrive” pacing to electrically convert a sustained ventricular tachycardia (fast heart rhythm) and "backup" pacing if bradycardia
(slow heart rhythm) occurs. They also offer a host of other
sophisticated functions such as storage of detected arrhythmic events
and the ability to perform electrophysiologic testing. Stored information can help your doctor optimize the ICD for your needs.What should I ask my doctor or nurse about living with an ICD?You
most likely can resume a near normal lifestyle. But, it is best to ask
your doctor what types of machines or equipment you should avoid. Also
ask what you can and cannot do when you have an ICD. Read about living with an ICD.Download ICD Questions to Ask Your Doctor for suggested questions for your healthcare providers, such as:

When can I resume normal activities?

Can I swim?

Can I run?

Can I have sex?

Can I play video games and use wireless devices?

What will the ICD feel like day to day?

When can I expect a shock?

Does the shock hurt?

AHA RecommendationIf
you have an Implantable Cardioverter Defibrillator, be aware of your
surroundings and the devices that may interfere with its operation.
Potentially disruptive devices include those with strong magnetic
fields. The following devices can disrupt the ICD’s signaling and
prevent it from working properly, sometimes without your knowledge. The
longer you are exposed to the potentially interruptive device and the
closer it is in proximity to your ICD, the more likely it will affect
your ICD’s performance.

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